The Roosevelt Range is an up to high mountain range in Northern Peary Land, formed by
alpine-type mountains. The topography of the mountains is deeply eroded, with sharp, jagged ridges and precipitous cliffs. Owing to a structural continuum in the mountains between
Johannes V. Jensen Land in the east and
Nansen Land in the west, American geologist
William E. Davies called the wider range the "Nansen-Jensen Alps" in a work he published in 1972. The Roosevelt Range would be thus a subrange of a wider mountain chain with its westernmost foothills in Nansen Land, reaching all the way to Johannes V. Jensen Land in the east. The Roosevelt Range proper rises in
Roosevelt Land in the west and stretches eastward across
Gertrud Rask Land, north of a valley between the heads of the
Harder Fjord in the west and the
Frigg Fjord in the east. It extends eastwards in
Johannes V. Jensen Land north of the
Frederick E. Hyde Fjord beyond the
Polkorridoren (Polar Corridor), a
mountain pass connecting two glacial valleys running from North to South between the heads of
Sands Fjord to the north and Frigg Fjord to the south. Its easternmost subranges almost reach the eastern end of northern Peary Land. The area near the
Lincoln Sea coast, southwest of
Cape Morris Jesup is known as
Ulvebakkerne (Wolf Hills).
Glaciers The valleys between mountains are filled with glaciers or icefields, none of which are very large. In the same manner as other features in this range many glaciers are unnamed. •
Thomas Glacier (Greenland) •
Raven Glacier •
A. Harmsworth Glacier •
Modvind Glacier •
Nord Glacier •
Syd Glacier •
Malcantone Glacier •
Nysne Glacier •
Sif Glacier •
Borup Glacier •
Moore Glacier •
Ydun Glacier •
Bertelsen Glacier ==Geology==